Transmission-gearing.



0. 0. YOUNG.

TRANSMISSION GEARING.

APPLIOATION FILED AUG. 31, 1910. 984,730.. Patented Feb. 21, 1911.

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lwrnron Hill W I TNESSES Arron/var 0.0.YOUNG. TRANSMISSION GEARING.

APPLICATION FILED AUG. 31, 1910.

984,730. Patented Feb. 21, 1911.

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984,730. Patented Feb. 21, 1911.

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FIG. 5

CLEVELAND o. YOUNG,

or 03101160, ILLInois.

TRANSMISSION-GEARIIVG.

To all whom it may concern:

Be it known that I, CLEVELAND O. YOUNG, citizen of the United States,residing at Chicago, in the county of Cook and'State of Illinois, haveinvented certain new and useful Improvements in Transmission-Gearing, ofwhich the following is a specification.

This invention relates to new and useful improvements in transmissiongearing of the frictional type, and it is especially adapted for use onautomobiles, but capable of other uses, if desired.

The objects of the invention are to provide suitable meansgto preventthe stripping of gears; to prevent a sudden jerk or jar when eitherstarting or stopping the motor vehicle or other machine; to reduce thenum ber of foot pedals or operating levers, and to eliminate the use ofside levers in automobiles.

In the accompanying drawings, Figure 1 is an end elevation of assembledparts of the gearing. Fig. 2. is a plan view of the parts shownin Fig.1.."Fig. 3 is a plan showing the operating pedal and connections. Fig. 4is a side elevation of the parts shown in Fig. 3. Figs. 5 and 6 are sideand end elevations of a tension device, forming an element of thegearing. Figs. 7 and 8 are side and end part of the gearing.

Referring specificallyto the drawings, 10'

indicates 'a motor or driving shaft on which is fixed a small gear 11, alarge gear 12, and a member 13 of a friction clutch, which latter may beof any ordinary or desired type, and is secured near one end of theshaft. The gear 11 engages a large gear 14 fixed on a shaft 15 whichalso carries the member 16 of a friction clutch. .The gear 12 engages agear 17 fixed on shaft 18, which carries a member 19 of a frictionclutch, which may be identical in design with the members 13 and 16; Theshafts 15 and 18 are located 'on opposite sides of the driving shaft 10.

An intermediate or jack shaft 20 is disposed in line with the shaft 10,and carries the member 21 of a clutch which is engageable with themember 13. The hub of the sliding member 21 is grooved toreceive thefork of an operating lever 22, and between said hub. and the fixedcollar 23 a coiled spring 24 is retained in compression. A small gear 25is secured to the opposite end of the shaft 20, and engages a gear 26.The shafts 27 and 28 carry members 29 and 30,

Specification of Letters Patent.

Patented Feb. 21, 1911.

Application filed August 31, 1910. Serial No. 579,909.

on the shaft 39, the first being held adjacent to the hub 26 of the gear26, and the others being rotatable adjacent to each other between saidhub and a collar 42 fixed on said shaft 39. Each loose collar 42 is pro-I vided with a lock 43 which overlaps the adjacent collar and isarranged to engage a projection 42 thereon, as hereinafter explained.One end of a coiled spring 40 is fastened to the hub 26*, and extendsaround the collars 42, and is fastened at its other 1 end to a collar 41loose on the shaft 39. An-

other spring 44, wound in reverse of spring 40, is connected to collar41 at one end and to a fixed collar. 45, on the shaft 39, at the otherend. Loose collars 42 are retained on the shaft 39 between the collars41 and 45. elevations of a cushioning device forming A cushioning orfrictional device is provided at the end of shaft 39, as seen best inFigs. 7 and 8. It consists of a spirally 17; the engagement of the righthand clutch 19 and 29' will produce high or second speed. The engagementof the middle clutch 13 and 21 will produce reverse drive under similarconditions. The engagement of any one of the clutches will accomplishthe aforesaid gears being necessary, and they are always in.mesh.. Anyone of the three operations before mentioned will, through the gearingprovided, produce a revolution of the gear operations, as desired, noshifting of therings 33 grooved member 46 secured to the gear 26,

26 which is directly connected with the shock-eliminating mechanismoperating between it and the driven shaft 39. The revolution of gear 26on shaft 39 in starting increases the tension of the spring 40 andreduces its diameter until a certain point is reached when the hubof thegear 26 and the adjacent loose collar 42 will revolve, the hub 26 beingconnected to the first collar, as by member 26. Theprojection 43 on thiscollar will in its revolution catch the projecsprings would produce ashock. To prevent 7 this, the device illustrated especially in Figs. 7and 8 is provided. In starting the gearing, the piece 47 will be in theposition shown; and as the revolution of the spirally grooved member 46continues in consequence of the turn of the gear 26 to which it isfastened, the member 47 will be carried upwardly by the spiral grooveuntil it reaches the end of the groove, at the top, where it will remainuntil the machine is stopped. The recoil of the spring .40 will thenproduce a reverse movement of the gear 26 and the member 46, and asthepiece 47 is forced downwardly friction between said piece and the wallof the groove is produced, which tends to overcome the recoil of thespring 40 and prevent a sudden jerk or jar, and this action is assistedby the compression of the spring 48, which assists said movement andincreasesthe friction between the members 46 and 47 The spring 44 alsoassists in preventing too quick recoil, inasmuch as it is wound and alsoacts in opposition to spring 40,'being connected thereto by the loosecollar 41. When the reverse clutch 13, 21, is engaged the gear 26 isalso revolved and the same operation is produced as with the first speedoperation.

The clutches are operated by the devices shown especially in Figs. 3 and4. The forked ends of the'levers 22, 31 and 32 are of the ordinary type,said levers being mounted on a shaft 50 and connected by pivots 51 tolinks 22*, 31 and 32" whichslide in suitable guides in a guide piece 52.The end of each of said rods is hooked, as indicated at 53 and hasprojections 53 in contact with the stem 54 of the pedal 54, suitablerecesses in said stem being provided for the rods. The hooks 53 at theends of the rods are engaged respectively with pivoted dogs 55, 56 and57, mounted on brackets 58 and held in position by springs 59pressingesmao I thereunder. Each dog is operated by a rod 60 whichextends through holes in the pedal 54 and through a guide 61 on the stemof the pedal, each trip-rod having a spring 60 normally holding it inraised position. A stop 60 limits the lift. A separate trip rod isprovided for each dog, and a separate dog for each connecting rod. Thesprings 24, 33, and 34, respectively, tend to engage the respectiveclutches, and this action is normally resisted by the dogs 55, 56 and.57, the upright arms of which engage the hooks 53 and the horizontalarms of which press upwardly against the trip rods 60, which are stoppedby collars 60 contacting against the guides 61. To release any lever,and thus permit the engagement of a selected clutch, the trip rod whichcorresponds to said clutch is pressed down until the corresponding' dogis disengaged from the hook at the end of the connecting rod. Then theforce of the clutch spring will throw the clutch members together, andsaid clutch will remain inengagement until the pedal 54 is pressedforwardly to an extent sufficient to reengage the hook 53, which wasreleased, with the upright member of the dog, said movement acting to.disengage the clutch and stop the drive until the same or an-' other dogis again released by operation of the trip-rod 60. The pressure on thepedal 54 will, to a certain extent, control the engagement'of theselected clutch, since the pressure thereon will tend to disengage theclutch. It will thus beseen that the engagement of any clutch may beeffected and controlled by operation of the lever 54 and the associatedtrip-rods 60, one

foot of the operator being all that is necessary for this purpose.

- For an emergency I provide a pedal 62 connected by rod 63 and pivot 50to a lever 63 which is fixed on the shaft 50. Said shaft also carrieslevers 63 and 63 and said levers 63, 63 and63 are bent as indicated at63 to engage the respective operatinglevers above described; and anyclutch that is engaged at any time may be disengaged .by pressure on thepedal 62, the projections 63 extending across in front of the respectivelevers 31, 22 and 32, to throw the same and disengage the clutchescorresponding thereto.

I claim:

1. The combination of driving and driven shafts, a plurality ofintermediate shafts, change speed and reverse gearin between the drivingshaft and the respective intermediate shafts, said gearing includingfast and loose clutch members on each intermediate shaft, gearingbetween each intermediate shaft and the driven shaft, a spring tendingto engage each clutch, and means acting in opposition to the springs toindependently disengage each clutch.

The combination of a shaft, a wheel loosethereon, a series of collars onthe shaft,

one of said collars being fixed and the others being loose and havingprojections engageable successively with each other when the andconnected to the fixed collar and the last mentioned loose collar.

3. The combination of a shaft, a wheel loose thereon, a springconnection between the wheel and shaft, and a cushioning deviceoperatively connected to the wheel, to' absorb recoil of the spring.

4. The combination of a shaft, a wheel loose thereon, a springconnection between the same, and a cushioning device to absorb recoil ofthe spring, comprising a spirallygrooved member fastened to the Wheel,and a spring-pressed member having a projection inthe groove,frictionall'y engaging therein.

5, The combination with selective gear elements, of a controllingdevicificompris- .ing shifting levers connected respectively to theselective elements, springs}- tending to shift said elements 0engagement respectively, dogs having an operative connection to saidlevers and adapted to normally hold the said elements in disengagement,and ineansto release and reconnect said dogs re- 7 l5; ITHje'combination With selective gear elements, of a controlling devicecomprising shifting levers connected respectively to the selective .gearelements, springs tending to engage said elements, dogs having anoperative connection to said levers and adapted to normally hold thesaid elements in disengagement, an operating lever, and a set of tripscarried by the lever and cooperating with the dogs respectively torelease the same selectively, the operating lever having a connection tothe shifting levers to restore the same to connection with the dogs 7.The combination with selective gear elements, of a controlling devicecomprising shifting levers connected respectively to the selective gearelements, springs tending to engage said elements, dogs having anoperative connection to said levers and adapted to normally hold thesaid elements in disengagement, an operating pedal, and a set of tripscarried by the pedal in position for operation thereon and projecting toengage and release the dogs respectively, the pedal having also anoperative connection to the shifting levers to produce disengagement ofthe gear elements and restore the connection of the shifting levers andthe dogs.

8. The combination of selective speed gearing including a plurality ofclutches, springs tending to engage the members of said clutches, rodsoperatively connected to the movable clutch-members, dogs engaging therods and normally holding the clutches open, a lever operativelyconnected to all the rods to move the same to engagement with the dogsand open the clutches, and means carried by the lever to selectivelydisengage any dog from the corresponding rod, to permit the spring toclose the appropriate clutch.

In testimony whereof, I afiix my signature in presence of-two witnesses.Y

CLEVELAND O. YOUNG. Witnesses:

NELLm FELTSKOG, H. G. BATGHELOR.

